Question to the Department for Transport:

To ask the Secretary of State for Transport, what his policy is on the validity of permitted deviations from the Railway Group Standards when the rolling stock to which those derogations were granted is subsequently repurposed.

Permitted deviations are solely a matter for the relevant railway industry standards subject committee. Any change of use, which also requires a modification to a vehicle, may be subject to an authorisation under the Railways (Interoperability) Regulations 2011. Under such an authorisation, the national safety authority may wish to take any relevant deviations into account.